From: keith tokash (ktokash@hotmail.com)
Date: Fri Jan 04 2008 - 00:53:35 ARST
The MD5 in that output is probably the hash of the vlan.dat file, which houses
the VTP and VLAN information. You changed the VLAN information.
http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a00808
90613.shtml#backinfo
"For this alteration, a VLAN database was introduced into Cisco IOS
Software as a method to immediately save VTP updates for VTP clients and
servers. In some versions of software, this VLAN database is in the form of
a
separate file in NVRAM, called the vlan.dat file. You can view VTP/VLAN
information that is stored in the vlan.dat file for the VTP client or VTP
server if you issue the show vtp status
command."
With a few exceptions, secrecy is deeply incompatible with democracy and with
science.
--Carl Sagan
> Subject: Switching - Why MD5 digest changes?
> Date: Thu, 3 Jan 2008 21:25:06 -0500
> From: rroa@cisco.com
> To: ccielab@groupstudy.com
>
> Team
>
> Configuring some switches I see some changes at MD5 DIGEST
>
> sh vtp status showed:
> MD5 digest : 0xDC 0x17 0xB1 0xF5 0xA3 0xB9 0x91
> 0x07
>
> after creating some vlans and executing sh vtp status again, it showed:
>
> MD5 digest : 0x0D 0xA4 0xD4 0x39 0x48 0x57 0x4F
> 0x03
>
> Why it changed?
>
> Thanks,
> ROGER
>
> FULL DETAILS
> SW3(config)#do sh vtp status
> VTP Version : 2
> Configuration Revision : 0
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 5
> VTP Operating Mode : Server
> VTP Domain Name : CISCO-B
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Disabled
> VTP Traps Generation : Disabled
> MD5 digest : 0xDC 0x17 0xB1 0xF5 0xA3 0xB9 0x91
> 0x07
> Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00
> Local updater ID is 0.0.0.0 (no valid interface found)
>
> and then
>
> SW3(config)#do sh vtp status
> VTP Version : 2
> Configuration Revision : 8
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 13
> VTP Operating Mode : Server
> VTP Domain Name : CISCO-B
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Disabled
> VTP Traps Generation : Disabled
> MD5 digest : 0x0D 0xA4 0xD4 0x39 0x48 0x57 0x4F
> 0x03
> Configuration last modified by 0.0.0.0 at 3-1-93 00:13:57
> Local updater ID is 0.0.0.0 (no valid interface found)
>
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